Dataset: Phytoplankton abundance from bottles and environmental data

Name: Phytoplankton abudance and physical environmental data from niskin bottles off the coast of Juneau, Alaska from 2015-2016 (SEAK-AHAB project)
Published: 2017-07-25
Keywords: oceans

Cite This Dataset

DOI:10.1575/1912/bco-dmo.711846.1

Spatial Extent: N:58.4916 E:-134.6499 S:58.3819 W:-134.7903

Temporal Extent: 2015-02-17 - 2016-12-15

Project:

Enhancing Sustainability of Shellfish Harvest in Alaska: Addressing the Ecology of Alexandrium Blooms and their Sociocultural Impacts (SEAK-AHAB)

Principal Investigator:

Dr Elizabeth D. Tobin (University of Alaska Fairbanks, UAF-Juneau)

BCO-DMO Data Manager:

Hannah Ake (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2017-07-25

Restricted:

Validated:

Yes

Current State:

Final no updates expected

Phytoplankton abudance and physical environmental data from niskin bottles off the coast of Juneau, Alaska from 2015-2016 (SEAK-AHAB project)

Abstract:

Phytoplankton abudance and physical environmental data from niskin bottles off the coast of Juneau, Alaska from 2015-2016 (SEAK-AHAB project)

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Archival Copy

Version Date	Archive	Persistent Identifier	Date Assigned
2017-07-25	Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)	10.1575/1912/bco-dmo.711846.1	2019-06-11

Description

Phytoplankton data and associated environmental conditions collected from niskin bottles approximately weekly from four phytoplankton monitoring sites in Juneau, AK in 2015 and 2016.

Methods & Sampling

Phytoplankton Data:

Dock and beach-based phytoplankton bottle seawater grab (2.2L, horizontal, pvc) samples were collected at approximately weekly intervals at four phytoplankton sampling stations; Auke Bay, Amalga, Eagle Beach and Auke Rec in Juneau, AK. The bottle grab sampler was deployed to depth in the open position and triggered using a messenger.

Environmental Data:

Air temperature was recorded using the GPS mode on the NOAA weather android application. Surface seawater salinity was determined using a refractometer for salinity. Surface seawater temperature was recorded using a waterproof digital thermometer. Tide observations were verified using the GPS mode on the Tides Near Me android application.

Data Processing Description

Grab bottle samples were transferred into a 1 L Nalgene bottle and 100 mL was subsampled into a settling jar, fixed with 25% Glutaraldehyde (final concentration 0.25% Glutaraldehyde) and concentrated 10x. The 10x concentrated seawater sample was counted in a 1mL Sedgewrick Rafter counting chamber to determine concentrations of the target species Alexandrium sp., and the Dinoflagellate and Diatom communities.

BCO-DMO Data Processing Notes:

-Reformatted column names to comply with BCO-DMO standards
-Removed spaces from data values and replaced with underscores
-Filled in blank cells with "nd"
-Replaced tide and weather codes with the appropriate definitions listed in the metadata
-2017-07-25: Updated with data from 2016.

Data Files

File
phyto_bottle_data.csv (Comma Separated Values (.csv), 38.20 KB) MD5:14a15c7886a52c771f165928ce50bb98 Primary data file for dataset ID 711846

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Divsion of Integrative and Collaborative Education and Research	ICER-1415195

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
Tobin_2015_2016		2015-03-10	shoreside Juneau_Alaska	Dr Elizabeth D. Tobin (Principal Investigator)	data info

Instruments

Bottle

Supplied Description:

2.2L horizontal pvc

Instrument Type

Generic Name: Bottle

Generic Description:

A container, typically made of glass or plastic and with a narrow neck, used for storing drinks or other liquids.

Refractometer

Supplied Description:

Measured sea surface salinity

Instrument Type

Generic Name: Refractometer

Generic Description:

A refractometer is a laboratory or field device for the measurement of an index of refraction (refractometry). The index of refraction is calculated from Snell's law and can be calculated from the composition of the material using the Gladstone-Dale relation.

In optics the refractive index (or index of refraction) n of a substance (optical medium) is a dimensionless number that describes how light, or any other radiation, propagates through that medium.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
sampling_event	Sampling event ID	unitless	ev_code
date	Date sample was taken; YYYYmmdd	unitless	date
time_zone	Time zone where sample was taken	unitless	time_zone
time_local	Local time when sampling occurred; HH:MM	unitless	time_local
station	Station where sample was taken	unitless	station
lat	Latitude	decimal degrees	lat
lon	Longitude	decimal degrees	lon
investigator	Investigator responsible for collecting sample	unitless	investigator
site_type	Type of site where sampling occurred; Dock or Beach	unitless	site_descrip
air_temp	Air temperature	celsius	temp_air
surface_salinity	Surfance salinity	parts per thousand (PPT)	sal_ss
surface_temp	Sea surface temperature	celsius	SST
weather	Observed weather conditions	unitless	weather
tide	Observed tide conditions	unitless	tide
instrument	Instrument used to collect sample	unitless	instrument
depth	Depth of sample	meters	depth
dinoflagellates	Algal cell concentration	cells per liter (cells/L)	cell_concentration
diatoms	Algal cell concentration	cells per Liter (cells/L)	cell_concentration
Alexandrium_sp	Algal cell concentration	cells per Liter (cells/L)	cell_concentration
ISO_DateTime_Local	DateTime local; YYYY-mm-dd HH:MM	unitless	ISO_DateTime_Local
year	Four digit year sample was taken; YYYY	unitless	year